2m 



similar manner to that of the Cypraea, as the exterior 

 surface, when rubbed down or polished, presents be- 

 neath it a very differently colored stratum: and as there 

 never is any dorsal lines on these shell?, the mantle 

 of the animal may be supposed entirely to envelope 

 them. They have no operculum or epidermis. This ge- 

 nus, like that of the Cypraea, much wants a more natu- 

 ral arrangement of its species, at present they are with 

 difficulty distinguished, as the indications are even 

 less marked than those of the Cypraeae. 



Oliva porphyria 



textilina 



erythrostoma 



pica 



tremulina 



angulata 



maura 



sepulturalis 



fulminans 



irisans 



elegans 



episcopal is 



venulata 



guttala 



leucophaea 



Oliva reticularis 



flammulata 



granitella 



araneosa 



literata 



scripta 



tricolor 



sanguinolenta 



mustelina 



lugubris 



funebralis 



glandiformis 



Peruviana 



Senegalensis 



fusiformis 



